CSVFileView is a free portable tool that lets you open CSV files and manage data without using Excel or Google Sheets on Windows 11/10.

If you cannot open an Excel file and see Excel cannot open the file because the file format or extension is not valid error, see this post.

CSV files are special text files that are quite common when dealing with spreadsheets. Here's how to open and make them.

Whether you've recently taken a Microsoft Excel course or you want to check that you're up-to-date with the program's latest capabilities, take the How-To Geek Advanced Excel Test and see how you fare ...

Numbers has the ability to open Excel files so you can work on them. You can also export spreadsheets in Numbers so that they are compatible with Excel.